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SPECTROPHOTOMETRIC DETERMINATION OF CYANIDE IN SOIL SAMPLES FROM GEOCHEMICAL SURVEY
Author(s): 
Pages: 37-39
Year: Issue:  2
Journal: HUBEI GEOLOGY & MINERAL RESOURCES

Keyword:  土壤分光光度法氰化物;
Abstract: 本文采用在乙酸锌、酒石酸介质中蒸馏分离出土壤中氰化物然后用分光光度法测定氰化物含量.在中性或弱酸性介质中,氰离子和氯胺T反应,转变成氯化氰,再与吡啶作用,水解后生成戊烯二醛,然后与吡啶啉酮生成蓝色聚亚甲基染料,其颜色吸光度与一定含量的氰离子浓度成正比.选定波长615nm处,测其吸光度值.本方法的检出限为0.01μg/g.
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